Apple is now offering unlocked versions of the iPhone 4 in its online store. Starting today you can pick up an unlocked 16GB iPhone 4 for $649, and an unlocked 32GB iPhone 4 for $749 online, as long as you are having that phone shipped to a US address.

The unlocked iPhone 4 will work on any Apple-supported GSM network in the world. Customers in the US can use the phones on AT&T, but also T-Mobile. Phones used on T-Mobile’s network will; however, transfer data over T-Mobile’s EDGE network rather than the considerable faster 3G network used by AT&T.

What do you think about Apple offering unlocked iPhone 4s? Are any of you going to order one?